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Camera Imager

Posted: Sun Jan 01, 2017 1:05 pm
by elvgz
Hi,
in these days i try the demo version for Cinema 4D.
at first I did not realize that the Camera Imager in octane settings took precedence, and did not understand why the render was a bit 'yellowish.
I try to set to Linear and gamma 2.2 and now its better. But i don't know if this is the best workflow for octane.
What i can do? What is the best setting? How to proceed normally?

Thanks

Re: Camera Imager

Posted: Mon Jan 02, 2017 8:50 am
by bepeg4d
Hi elvgz,
since the Camera Imager (Tonemapping) and the Post Processing parameters are totally independent from the rendering calculation, you have a lot of freedom and you can change them on the fly or at the end of the render and save different results, without redoing the render.
You can work in linear mode or choose a different response curve to reduce the color correction steps in post if you like.
In c4dOctane you can specify different Camera Imager and Post effect values in the octane camera tag, in this way you can duplicate the same camera and assign different values, or you can use the compare feature in live viewer to check different response curves.
ciao beppe

Re: Camera Imager

Posted: Tue Jan 03, 2017 2:22 am
by allenh
May I ask what the 'correct' way to disable the imager completely is? I'd like to use my renders from Octane in a linear workflow pipeline, and am having trouble matching the final rendered image from Octane with what I'm seeing from (in my case) Mantra/Prman. It's not self-evident from the Imager panel in the renderTarget node how to tell it to just give me raw pixels).

Thanks!

Re: Camera Imager

Posted: Wed Jan 04, 2017 11:08 am
by bepeg4d
Hi allenh,
internally OctaneRender always work in linear mode, as said, the camera imager is like the post effect. When rendering in Live View, you can save in both linear mode or Tonemapped mode:
Screen Shot 2017-01-04 at 11.55.40.jpg
in Picture Viewer for final rendering, you have to choose the output type, Tonemapped or not:
Screen Shot 2017-01-04 at 11.57.11.jpg
in practice, in the Camera Imager you can choose the Linear response curve mode with Gamma 2.2 or choose a different response curve, but always save the final result as Linear untonemapped.
The same things happen for Render Passes, you have to specify if you want to save the final result in Linear or Tonemapped mode:
Screen Shot 2017-01-04 at 12.02.09.jpg
ciao beppe